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201510UC20
User Manual
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Quectel Wireless Solutions 201510UC20 User Manual

UC20 User Manual
UMTS/HSPA Module Series
Rev. UC20_User_Manual_V1.4
Date: 2014-10-22
www.quectel.com
UMTS/HSPA Module Series
Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters:
Quectel Wireless Solutions Co., Ltd.
Office 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233
Tel: +86 21 5108 6236
Mail: info@quectel.com
Or our local office, for more information, please visit:
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GENERAL NOTES
QUECTEL OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION
PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT
TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT
MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT
ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR
RELIANCE UPON THE INFORMATION. THE INFORMATION SUPPLIED HEREIN IS SUBJECT TO
CHANGE WITHOUT PRIOR NOTICE.
COPYRIGHT
THIS INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF
QUECTEL CO., LTD. TRANSMITTABLE, REPRODUCTION, DISSEMINATION AND EDITING OF THIS
DOCUMENT AS WELL AS UTILIZATION OF THIS CONTENTS ARE FORBIDDEN WITHOUT
PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF DAMAGES. ALL RIGHTS
ARE RESERVED IN THE EVENT OF A PATENT GRANT OR REGISTRATION OF A UTILITY MODEL
OR DESIGN.
Copyright © Quectel Wireless Solutions Co., Ltd. 2014. All rights reserved.
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Revision
Date
Author
Description
1.0
2013-07-17
Mountain ZHOU
Initial
1.1
2013-08-29
Mountain ZHOU
1. Updated USB driver information.
2. Added GNSS contents in Chapter 4.
3. Added GNSS current consumption.
4. Updated GNSS antenna requirements.
5. Released USIM_PRESENCE function.
1.2
2014-01-21
Mountain ZHOU
1. Added UC20-G information.
2. Added AMR-WB feature.
3. Added USB upgrade test points’ diagram.
4. Added reference design of transistor circuit on
UART interface.
5. Deleted debug function of Debug UART
interface.
6. Released AP_READY, main UART upgrade
function and Rx-diversity function.
7. Modified UC20-A frequency bands.
8. Modified W_DISABLE# definition.
9. Modified GNSS sensitivity definition.
10. Modified turning on timing figure.
11. Added power saving methods in Sleep Mode
in Chapter 3.5.1.
12. Updated airplane mode in Chapter 3.5.2.
13. Updated I2C pins definition.
14. Updated current consumption.
1.3
2014-03-05
Mountain ZHOU
1. Modified VDD_2V85 pin definition and GNSS
LNA design circuit.
2. Added notes about UC20 versions in Chapter
2.1.
3. Added description about the sleep mode in
About the Document
History
UC20_Hardware_Design Confidential / Released 2 / 84
UMTS/HSPA Module Series
Chapter 3.16.2.
4. Updated power circuit of Figure 6.
5. Updated current consumption.
1.4
2014-10-22
Mountain ZHOU
1. Updated internet protocol features and USB
driver.
2. Updated VBAT input voltage range.
3. Updated Chapter 3.6.2, and added VBAT
drop figure.
4. Updated antenna requirement in Chapter
5.3.1.
5. Updated current consumption.
6. Updated recommended footprint in Chapter
7.2.
7. Deleted description of UART autobauding.
8. Deleted Chapter of USIM connector.
9. Changed TXB0108 chip to TXS0108 chip.
UC20_Hardware_Design Confidential / Released 3 / 84
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Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 4
Table Index ................................................................................................................................................... 7
Figure Index ................................................................................................................................................. 8
1 Introduction ........................................................................................................................................ 10
1.1. Safety Information ............................................................................................................... 11
2 Product Concept ................................................................................................................................ 12
2.1. General Description ............................................................................................................. 12
2.2. Directives and Standards ..................................................................................................... 13
2.2.1. FCC Statement ........................................................................................................... 13
2.2.2. FCC Radiation Exposure Statement ........................................................................... 13
2.3. Key Features ....................................................................................................................... 14
2.4. Functional Diagram ............................................................................................................. 16
2.5. Evaluation Board ................................................................................................................. 17
3 Application Interface ......................................................................................................................... 18
3.1. General Description ............................................................................................................. 18
3.2. Pin Assignment.................................................................................................................... 19
3.3. Pin Description .................................................................................................................... 20
3.4. Operating Modes ................................................................................................................. 26
3.5. Power Saving ...................................................................................................................... 27
3.5.1. Sleep Mode ................................................................................................................ 27
3.5.1.1. UART Application ............................................................................................. 27
3.5.1.2. USB Application with Suspend Function ........................................................... 28
3.5.1.3. USB Application without Suspend Function ...................................................... 28
3.5.2. Airplane Mode ............................................................................................................ 29
3.6. Power Supply ...................................................................................................................... 30
3.6.1. Power Supply Pins ..................................................................................................... 30
3.6.2. Decrease Voltage Drop .............................................................................................. 30
3.6.3. Reference Design for Power Supply ........................................................................... 31
3.6.4. Monitor the Power Supply .......................................................................................... 32
3.7. Turn on and off Scenarios .................................................................................................... 32
3.7.1. Turn on Module Using the PWRKEY .......................................................................... 32
3.7.2. Turn off Module .......................................................................................................... 34
3.7.2.1. Turn off Module Using the PWRKEY Pin........................................................... 34
3.7.2.2. Turn off Module Using AT Command ................................................................ 35
3.7.2.3. Automatic Shutdown ......................................................................................... 35
3.8. Reset the Module ................................................................................................................ 36
3.9. RTC Backup ........................................................................................................................ 38
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3.10. UART Interface .................................................................................................................... 39
3.11. USIM Card Interface ............................................................................................................ 42
3.12. USB Interface ...................................................................................................................... 45
3.13. PCM and I2C Interface ........................................................................................................ 46
3.14. ADC Function ...................................................................................................................... 49
3.15. Network Status Indication .................................................................................................... 50
3.16. Operating Status Indication .................................................................................................. 51
3.16.1. STATUS ..................................................................................................................... 51
3.16.2. SLEEP_IND ............................................................................................................... 51
3.17. Behavior of the RI ................................................................................................................ 53
4 GNSS Receiver ................................................................................................................................... 54
4.1. General Description ............................................................................................................. 54
4.2. GNSS Performance ............................................................................................................. 55
4.3. Layout Guideline ................................................................................................................. 56
5 Antenna Interface ............................................................................................................................... 57
5.1. GSM/UMTS Antenna Interface ............................................................................................ 57
5.1.1. Pin Definition .............................................................................................................. 57
5.1.2. Operating Frequency .................................................................................................. 57
5.1.3. Reference Design....................................................................................................... 58
5.2. GNSS Antenna Interface ..................................................................................................... 59
5.2.1. Reference Design for Passive Antenna ...................................................................... 59
5.2.2. Reference Design for Active Antenna ......................................................................... 60
5.3. Antenna Installation ............................................................................................................. 60
5.3.1. Antenna Requirement ................................................................................................ 60
5.3.2. Install the Antenna with RF Connector ........................................................................ 61
6 Electrical, Reliability and Radio Characteristics ............................................................................ 63
6.1. Absolute Maximum Ratings ................................................................................................. 63
6.2. Power Supply Ratings ......................................................................................................... 63
6.3. Operating Temperature ........................................................................................................ 64
6.4. Current Consumption .......................................................................................................... 64
6.5. RF Output Power ................................................................................................................. 68
6.6. RF Receiving Sensitivity ...................................................................................................... 69
6.7. Electrostatic Discharge ........................................................................................................ 69
7 Mechanical Dimensions .................................................................................................................... 70
7.1. Mechanical Dimensions of the Module................................................................................. 70
7.2. Footprint of Recommendation.............................................................................................. 73
7.3. Top View of the Module ....................................................................................................... 74
7.4. Bottom View of the Module .................................................................................................. 74
8 Storage and Manufacturing .............................................................................................................. 75
8.1. Storage ................................................................................................................................ 75
8.2. Manufacturing and Welding ................................................................................................. 75
8.3. Packaging ........................................................................................................................... 76
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9 Appendix A Reference ....................................................................................................................... 78
10 Appendix B GPRS Coding Scheme ................................................................................................. 82
11 Appendix C GPRS Multi-slot Class .................................................................................................. 83
12 Appendix D EDGE Modulation and Coding Scheme ..................................................................... 84
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Table Index
TABLE 1: UC20 SERIES FREQUENCY BANDS .............................................................................................. 12
TABLE 2: UC20 KEY FEATURES ..................................................................................................................... 14
TABLE 3: IO PARAMETERS DEFINITION ........................................................................................................ 20
TABLE 4: PIN DESCRIPTION ........................................................................................................................... 20
TABLE 5: OVERVIEW OF OPERATING MODES ............................................................................................. 26
TABLE 6: VBAT AND GND PINS ....................................................................................................................... 30
TABLE 7: PWRKEY PIN DESCRIPTION .......................................................................................................... 32
TABLE 8: RESET_N PIN DESCRIPTION ......................................................................................................... 36
TABLE 9: PIN DEFINITION OF THE MAIN UART INTERFACE ....................................................................... 39
TABLE 10: PIN DEFINITION OF THE DEBUG UART INTERFACE ................................................................. 40
TABLE 11: LOGIC LEVELS OF DIGITAL I/O .................................................................................................... 40
TABLE 12: PIN DEFINITION OF THE USIM INTERFACE ............................................................................... 42
TABLE 13: USB PIN DESCRIPTION ................................................................................................................ 45
TABLE 14: PIN DEFINITION OF PCM AND I2C INTERFACE .......................................................................... 48
TABLE 15: PIN DEFINITION OF THE ADC ...................................................................................................... 49
TABLE 16: CHARACTERISTIC OF THE ADC .................................................................................................. 49
TABLE 17: PIN DEFINITION OF NETWORK INDICATOR ............................................................................... 50
TABLE 18: WORKING STATE OF THE NETWORK INDICATOR..................................................................... 50
TABLE 19: PIN DEFINITION OF STATUS ........................................................................................................ 51
TABLE 20: PIN DEFINITION OF SLEEP_IND .................................................................................................. 52
TABLE 21: BEHAVIOR OF THE RI ................................................................................................................... 53
TABLE 22: GNSS PERFORMANCE ................................................................................................................. 55
TABLE 23: PIN DEFINITION OF THE RF ANTENNA ....................................................................................... 57
TABLE 24: THE MODULE OPERATING FREQUENCIES ................................................................................ 57
TABLE 25: PIN DEFINITION OF GNSS ANTENNA .......................................................................................... 59
TABLE 26: GNSS FREQUENCY ....................................................................................................................... 59
TABLE 27: ANTENNA REQUIREMENTS .......................................................................................................... 61
TABLE 28: ABSOLUTE MAXIMUM RATINGS .................................................................................................. 63
TABLE 29: THE MODULE POWER SUPPLY RATINGS .................................................................................. 63
TABLE 30: OPERATING TEMPERATURE ........................................................................................................ 64
TABLE 31: THE MODULE CURRENT CONSUMPTION .................................................................................. 65
TABLE 32: CONDUCTED RF OUTPUT POWER ............................................................................................. 68
TABLE 33: CONDUCTED RF RECEIVING SENSITIVITY ................................................................................ 69
TABLE 34: ELECTROSTATICS DISCHARGE CHARACTERISTICS ............................................................... 69
TABLE 35: RELATED DOCUMENTS ................................................................................................................ 78
TABLE 36: TERMS AND ABBREVIATIONS ...................................................................................................... 78
TABLE 37: DESCRIPTION OF DIFFERENT CODING SCHEMES .................................................................. 82
TABLE 38: GPRS MULTI-SLOT CLASSES ...................................................................................................... 83
TABLE 39: EDGE MODULATION AND CODING SCHEME ............................................................................. 84
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Figure Index
FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 17
FIGURE 2: PIN ASSIGNMENT (TOP VIEW) .................................................................................................... 19
FIGURE 3: UART SLEEP APPLICATION ......................................................................................................... 27
FIGURE 4: USB APPLICATION WITH SUSPEND FUNCTION ........................................................................ 28
FIGURE 5: USB SLEEP APPLICATION WITHOUT SUSPEND FUNCTION .................................................... 29
FIGURE 6: VOLTAGE DROP DURING TRANSMITTING BURST .................................................................... 31
FIGURE 7: STAR STRUCTURE OF THE POWER SUPPLY............................................................................ 31
FIGURE 8: REFERENCE CIRCUIT OF POWER SUPPLY .............................................................................. 32
FIGURE 9: TURN ON THE MODULE USING DRIVING CIRCUIT ................................................................... 33
FIGURE 10: TURN ON THE MODULE USING KEYSTROKE ......................................................................... 33
FIGURE 11: TIMING OF TURNING ON MODULE ........................................................................................... 34
FIGURE 12: TIMING OF TURNING OFF MODULE ......................................................................................... 35
FIGURE 13: REFERENCE CIRCUIT OF RESET_N BY USING DRIVING CIRCUIT ...................................... 37
FIGURE 14: REFERENCE CIRCUIT OF RESET_N BY USING BUTTON ...................................................... 37
FIGURE 15: TIMING OF RESETTING MODULE ............................................................................................. 37
FIGURE 16: RTC SUPPLY FROM NON-CHARGEABLE BATTERY ................................................................ 38
FIGURE 17: RTC SUPPLY FROM RECHARGEABLE BATTERY .................................................................... 38
FIGURE 18: RTC SUPPLY FROM CAPACITOR .............................................................................................. 39
FIGURE 19: REFERENCE CIRCUIT WITH TRANSLATOR CHIP ................................................................... 41
FIGURE 20: REFERENCE CIRCUIT WITH TRANSISTOR CIRCUIT .............................................................. 41
FIGURE 21: RS232 LEVEL MATCH CIRCUIT .................................................................................................. 42
FIGURE 22: REFERENCE CIRCUIT OF THE 8 PIN USIM CARD ................................................................... 43
FIGURE 23: REFERENCE CIRCUIT OF THE 6 PIN USIM CARD ................................................................... 44
FIGURE 24: REFERENCE CIRCUIT OF USB APPLICATION ......................................................................... 45
FIGURE 25: TEST POINTS OF FIRMWARE UPGRADE ................................................................................. 46
FIGURE 26: PRIMARY MODE TIMING ............................................................................................................ 47
FIGURE 27: AUXILIARY MODE TIMING .......................................................................................................... 47
FIGURE 28: REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CODEC .................................... 48
FIGURE 29: REFERENCE CIRCUIT OF THE NETWORK INDICATOR .......................................................... 51
FIGURE 30: REFERENCE CIRCUIT OF THE STATUS ................................................................................... 51
FIGURE 31: REFERENCE CIRCUIT OF THE SLEEP_IND ............................................................................. 52
FIGURE 32: RELATIONSHIP BETWEEN SLEEP AND NETWORK PAGING .................................................. 52
FIGURE 33: REFERENCE CIRCUIT OF ANTENNA INTERFACE ................................................................... 58
FIGURE 34: REFERENCE CIRCUIT OF GNSS PASSIVE ANTENNA ............................................................. 59
FIGURE 35: REFERENCE CIRCUIT OF GNSS ACTIVE ANTENNA ............................................................... 60
FIGURE 36: DIMENSIONS OF THE UF.L-R-SMT CONNECTOR (UNIT: MM) ................................................ 61
FIGURE 37: MECHANICALS OF UF.L-LP CONNECTORS ............................................................................. 62
FIGURE 38: SPACE FACTOR OF MATED CONNECTOR (UNIT: MM) ........................................................... 62
FIGURE 39: UC20 TOP AND SIDE DIMENSIONS ........................................................................................... 70
FIGURE 40: UC20 BOTTOM DIMENSIONS (BOTTOM VIEW) ....................................................................... 71
FIGURE 41: BOTTOM PADS DIMENSIONS (BOTTOM VIEW) ....................................................................... 72
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FIGURE 42: RECOMMENDED FOOTPRINT (TOP VIEW) .............................................................................. 73
FIGURE 43: TOP VIEW OF THE MODULE ...................................................................................................... 74
FIGURE 44: BOTTOM VIEW OF THE MODULE .............................................................................................. 74
FIGURE 45: LIQUIDS TEMPERATURE ............................................................................................................ 76
FIGURE 46: CARRIER TAPE ............................................................................................................................ 77
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1 Introduction
This document defines the UC20 module and describes its hardware interface which are connected with
your application and the air interface.
This document can help you quickly understand module interface specifications, electrical and
mechanical details. Associated with application notes and user guide, you can use UC20 module to
design and set up mobile applications easily.
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Full attention must be given to driving at all times in order to reduce the risk of an
accident. Using a mobile while driving (even with a handsfree kit) cause distraction
and can lead to an accident. You must comply with laws and regulations restricting
the use of wireless devices while driving.
Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it
switched off. The operation of wireless appliances in an aircraft is forbidden to
prevent interference with communication systems. Consult the airline staff about
the use of wireless devices on boarding the aircraft, if your device offers a Airplane
Mode which must be enabled prior to boarding an aircraft.
Switch off your wireless device when in hospitals or clinics or other health care facilities. These requests are desinged to prevent possible interference with sentitive medical equipment.
Cellular terminals or mobiles operate over radio frequency signal and cellular
network and cannot be guaranteed to connect in all conditions, for example no
mobile fee or an invalid SIM card. While you are in this condition and need
emergent help, please remember using emergency call. In order to make or
receive call, the cellular terminal or mobile must be switched on and in a service
area with adequate cellular signal strength.
Your cellular terminal or mobile contains a transmitter and receiver. When it is ON ,
it receives and transmits radio frequency energy. RF interference can occur if it is
used close to TV set, radio, computer or other electric equipment.
In locations with potencially explosive atmospheres, obey all posted signs to turn
off wireless devices such as your phone or other cellular terminals. Areas with
potencially exposive atmospheres including fuelling areas, below decks on boats,
fuel or chemical transfer or storage facilities, areas where the air contains
chemicals or particles such as grain, dust or metal powders.
1.1. Safety Information
The following safety precautions must be observed during all phases of the operation, such as usage,
service or repair of any cellular terminal or mobile incorporating UC20 module. Manufacturers of the cellular
terminal should send the following safety information to users and operating personnel and to incorporate
these guidelines into all manuals supplied with the product. If not so, Quectel does not take on any liability
for customer failure to comply with these precautions.
UC20_Hardware_Design Confidential / Released 11 / 84
UMTS/HSPA Module Series
1)
. UC20-G includes Data-only and Telematics versions. Data-only version does not support voice
function, Telematics version supports it.
Module
GSM
850
EGSM
900
DCS
1800
PCS
1900
UMTS
800
UMTS
850
UMTS
900
UMTS
1900
UMTS
2100
Rx-
diversity
GNSS
UC20-G
NOTE
2 Product Concept
2.1. General Description
UC20 is an embedded HSPA+/EDGE engine with Rx-diversity. Its UMTS-based modem provides data
connectivity on HSPA+, HSDPA, HSUPA, WCDMA, EDGE, GPRS networks. It can also provide
GPS/GLONASS and voice functionality1) for your specific application. UC20 offers a maximum data rate
of 14.4Mbps on downlink and 5.76Mbps on uplink in HSPA+/HSPA mode. UC20 also support
GPRS/EDGE multi-slot class 12. GPRS supports the coding schemes CS-1, CS-2, CS-3 and CS-4.
EDGE supports CS1-4 and MCS1-9 coding schemes.
Table 1: UC20 Series Frequency Bands
More details about GPRS/EDGE multi-slot configuration and coding schemes, please refer to Appendix B,
C and D.
With a tiny profile of 32.0mm × 29.0mm × 2.5mm, UC20-G can meet almost all requirements for M2M
application such as automotive, metering, tracking system, security solutions, routers, wireless POS,
mobile computing devices, PDA phone and tablet PC, etc..
UC20-G is an SMD type module, which can be embedded in application through its 112-pin pads
including 72 LCC signal pads and 40 other pads.
UC20-G is integrated with internet service protocols like TCP/UDP and PPP. Extended AT commands
have been developed for customer to use these internet service protocols easily.
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UMTS/HSPA Module Series
Part
Number
Frequency
Range (MHz)
Peak
Gain
(XZ-V)
Average Gain
(XZ-V)
VSWR
Impedance
3R007A
UMTS2100: 1922~2168MHz
UMTS1900:1852~1992MHz
UMTS900: 882~958MHz
UMTS850:822~896MHz
UMTS800:832~887MHz
1 dBi typ.
1 dBi typ.
3 max
50Ω
2.2. Directives and Standards
The UC20 module is designed to comply with the FCC statements. FCC ID: XMR-201510UC20
The Host system using UC20, should have label indicated FCC ID: XMR-201510UC20.
2.2.1. FCC Statement
1. This device complies with Part 15 of the FCC rules. Operation is subject to the following conditions:
a) This device may not cause harmful interference.
b) This device must accept any interference received, including interference that may cause undesired
operation.
2. Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
2.2.2. FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator and
your body as well as kept minimum 20cm from radio antenna depending on the Mobile status of this
module usage. This module should NOT be installed and operating simultaneously with other radio.
The manual of the host system, which uses UC20, must include RF exposure warning statement to
advice user should keep minimum 20cm from the radio antenna of UC20 module depending on the
Mobile status.
Note: If a portable device (such as PDA) uses UC20 module, the device needs to do permissive change
and SAR testing.
The following list of antenna is indicating the maximum permissible antenna gain.
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UMTS/HSPA Module Series
Feature
Details
Power Supply
Supply voltage: 3.3V~4.3V
Typical supply voltage: 3.8V
Frequency Bands
UC20-G: GSM850/900/1800/1900, UMTS800/850/900/1900/2100
Transmission Data
HSPA R6: Max 14.4Mbps (DL)/Max 5.76Mbps (UL)
UMTS R99: Max 384kbps (DL)/Max 384kbps (UL)
EDGE: Max 236.8kbps (DL)/Max 236.8kbps (UL)
GPRS: Max 85.6kbps (DL)/Max 85.6kbps (UL)
CSD: 14.4kbps
Transmitting Power
Class 4 (33dBm±2dB) for GSM850 and EGSM900
Class 1 (30dBm±2dB) for DCS1800 and PCS1900
Class E2 (27dBm±3dB) for GSM850 and EGSM900 8-PSK
Class E2 (26dBm+3/-4dB) for DCS1800 and PCS1900 8-PSK
Class 3 (24dBm+1/-3dB) for UMTS800/850/900/1900/2100
HSPA and UMTS Features
HSPA data rate is corresponded with 3GPP R6. 14.4Mbps on downlink
and 5.76Mbps on uplink.
WCDMA data rate is corresponded with 3GPP R99/R4. 384kbps on
downlink and 384kbps on uplink.
Support both 16-QAM and QPSK modulation.
GSM/GPRS/EDGE
Data Features
GPRS:
Support GPRS multi-slot class 12 (10 by default)
Coding scheme: CS-1, CS-2, CS-3 and CS-4
Maximum of four Rx time slots per frame
EDGE:
Support EDGE multi-slot class 12 (12 by default).
Support GMSK and 8-PSK for different MCS (Modulation and Coding
scheme).
Downlink coding schemes: CS 1-4 and MCS 1-9
Uplink coding schemes: CS 1-4 and MCS 1-9
CSD:
CSD transmission rates: 14.4kbps non-transparent
Support Unstructured Supplementary Services Data (USSD).
Internet Protocol Features
Support TCP/UDP/PPP/FTP/SMTP/HTTP/FILE/MMS/SSL protocols
Support the protocols PAP (Password Authentication Protocol) and
CHAP (Challenge Handshake Authentication Protocol) usually used
2.3. Key Features
The following table describes the detailed features of UC20 module.
Table 2: UC20 Key Features
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UMTS/HSPA Module Series
for PPP connections.
SMS
Text and PDU mode
Point to point MO and MT
SMS cell broadcast
SMS storage: ME by default
USIM Interface
Support USIM/SIM card: 1.8V, 3.0V
Audio Features
Support one digital audio interface: PCM interface
GSM: HR/FR/EFR/AMR/AMR-WB
WCDMA: AMR/AMR-WB
Echo cancellation and noise suppression
PCM Interface
Used for audio function with external codec.
Support 8-bit A-law, μ-law and 16-bit linear data formats.
Support long frame sync and short frame sync.
Support master and slave mode, but must be the master in long frame
sync.
UART Interface
Support two UART interfaces: main UART interface and debug UART
interface.
Main UART interface:
Seven lines on main UART interface  Support RTS and CTS hardware flow control  Baud rate can reach up to 921600bps, 115200bps by default  Used for AT command, data transmission or firmware upgrade  Support multiplexing function
Debug UART interface:
Two lines on debug UART interface: DBG_TXD and DBG_RXD  Can be used for GNSS NMEA sentences output
USB Interface
Compliant with USB 2.0 specification (slave only), the data transfer
rate can reach up to 480Mbps.
Used for AT command communication, data transmission, GNSS
NMEA output, software debug and firmware upgrade.
USB Driver: Windows XP, Windows Vista, Windows 7, Windows 8,
Windows CE5.0/6.0/7.0, Linux 2.6/3.0, Android 2.3/4.0/4.2.
Rx-diversity
Support UMTS Rx-diversity
GNSS Features
Gen8 of Qualcomm GNSS engine (GPS and GLONASS)
Protocol: NMEA 0183
AT Commands
Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT
commands.
Real Time Clock
Implemented
Network Indication
Two pins including NET_MODE and NET_STATUS to indicate
network connectivity status.
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UMTS/HSPA Module Series
2)
. When the module works within this restricted temperature range, RF performance might degrade. For
example, the frequency error or the phase error would increase.
Antenna Interface
Include main GSM/UMTS antenna, UMTS diversity antenna and
GNSS antenna.
Physical Characteristics
Size: 32.0±0.15 × 29.0±0.15 × 2.5±0.2mm
Weight: approx. 4.9g
Temperature Range
Normal operation: -35°C ~ +75°C
Restricted operation: -40°C ~ -35°C and +75°C ~ +85°C 2)
Storage temperature: -45°C ~ +90°C
Firmware Upgrade
USB interface (by default) or main UART interface.
RoHS
All hardware components are fully compliant with EU RoHS directive.
NOTE
2.4. Functional Diagram
The following figure shows a block diagram of UC20 and illustrates the major functional parts.
Power management  Baseband  DDR+NAND flash  Radio frequency  Peripheral interface
--UART interface
--USIM card interface
--USB interface
--PCM interface
--ADC interface
--Status indication
--Control interface
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UMTS/HSPA Module Series
PWRKEY
RESET_N
32kHz
19.2MHz
Power
Management Unit
Baseband
RF Transceiver
GNSS Receiver
ANT_GNSS
RF
Switch
DDR RAM/
ANT_MAIN
USIM
Status
ADC
PCM
UART
VBAT_BB
USB
ANT_DIV
VBAT_RF
VDD_EXT
GSM
UMTS
RF
Switch
VDD_2V85
WAKEUP_IN
VRTC
SLEEP_IND
W_DISABLE#
NAND Flash
2.5. Evaluation Board
In order to help you to develop applications with UC20, Quectel supplies an evaluation board (EVB),
RS-232 to USB cable, USB data cable, power adapter, earphone, antenna and other peripherals to
control or test the module. For details, please refer to document [2].
UC20_Hardware_Design Confidential / Released 17 / 84
Figure 1: Functional Diagram
UMTS/HSPA Module Series
3 Application Interface
3.1. General Description
UC20 is equipped with a 72-pin 1.3mm pitch SMT pads plus 40-pin other pads that connect to cellular
application platform. Sub-interfaces included in these pads are described in detail in the following
chapters:
Power supply  UART interface  USIM interface  USB interface  PCM interface  ADC interface  Status indication
UC20_Hardware_Design Confidential / Released 18 / 84
UMTS/HSPA Module Series
35
36
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
1
3
4
5
6
7
2
WAKEUP_IN
AP_READY
SLEEP_IND
W_DISABLE#
NET_MODE
NET_STATUS
VDD_EXT
GND
GND
DBG_RXD
DBG_TXD
USIM_PRESENCE
USIM_VDD
USIM_DATA
USIM_CLK
USIM_RST
VRTC
8
9
10
11
12
13
14
15
16
17
18
19
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
USIM_GND
GND
RESET_N
PWRKEY
AGND
RESERVED
PCM_IN*
PCM_OUT*
PCM_SYNC*
PCM_CLK*
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
VDD_2V85
ANT_DIV
GND
GND
USB_VBUS
USB_DM
USB_DP
RXD
TXD
DTR
RTS
CTS
DCD
RI
STATUS
VBAT_BB
VBAT_BB
VBAT_RF
VBAT_RF
GND
RESERVED
GND
GND
ANT_MAIN
GND
ANT_GNSS
GND
ADC1
RESERVED
I2C_SDA
I2C_SCL
RESERVED
RESERVED
RESERVED
RESERVED
ADC0
GND
GND
GND
73
74
75
76
77
78
79
80
81
82
83
84
100
101
102
106
107
111
112
103
104
109
105
110
89
94
98
88
93
97
86
91
96
85
90
95
99
87
92
Power
USB
UART
USIM PCM*
ANT
GND
RESERVED
OTHERS
108
1. Keep all RESERVED pins and unused pins unconnected.
2. GND pads 85~112 should be connected to ground in the design, and RESERVED pads 73~84
should not be designed in schematic and PCB decal.
3. “*” means PCM function is only supported in Telematics version.
NOTES
3.2. Pin Assignment
The following figure shows the pin assignment of the UC20 module.
Figure 2: Pin Assignment (Top View)
UC20_Hardware_Design Confidential / Released 19 / 84
UMTS/HSPA Module Series
Type
Description
IO
Bidirectional input/output
DI
Digital input
DO
Digital output
PI
Power input
PO
Power output
AI
Analog input
AO
Analog output
OD
Open drain
Power Supply
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
VBAT_BB
59,60
PI
Power supply for
module baseband
part.
Vmax = 4.3V
Vmin = 3.3V
Vnorm = 3.8V
It must be able to
provide sufficient
current up to 0.8A.
VBAT_RF
57,58
PI
Power supply for
module RF part.
Vmax = 4.3V
Vmin = 3.3V
Vnorm = 3.8V
It must be able to
provide sufficient
current in a transmitting
burst which typically
rises to 2.0A.
VRTC
18
IO
Power supply for
internal RTC circuit.
VOmax = 3.25V
when VBAT ≥ 3.3V.
VI = 1.5V~3.25V at
IIN = 3uA when
VBAT is not applied.
If unused, keep it open.
VDD_EXT
7
PO
Provide 1.8V for
Vnorm = 1.8V
Power supply for
3.3. Pin Description
The following tables show the UC20’s pin definition.
Table 3: IO Parameters Definition
Table 4: Pin Description
UC20_Hardware_Design Confidential / Released 20 / 84
UMTS/HSPA Module Series
external circuit.
IOmax = 20mA
external GPIO’s pull up
circuits.
VDD_2V85
34
PO
Provide 2.85V for
external circuit.
Vnorm = 2.85V
IOmax = 100mA
Reserved for future
application. If unused,
keep it open.
GND
8,9,19,36,
46,48,50~
54,56,72,
85~112
Ground.
Turn On/Off
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
PWRKEY
21
DI
Turn on/off the
module.
R
PU
≈ 200kΩ
VIHmax = 2.1V
VIHmin = 1.3V
VILmax = 500mV
Pull-up to 1.8V
internally.
RESET_N
20
DI
Reset the module.
RPU ≈ 200kΩ
VIHmax = 2.1V
VIHmin = 1.3V
VILmax = 500mV
Pull-up to 1.8V
internally. Active low.
If unused, keep it
open.
Status Indication
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
STATUS
61
OD
Indicate the module
operating status.
Require external
pull-up. If unused,
keep it open.
NET_MODE
5
DO
Indicate the module
network registration
mode.
VOHmin = 1.35V
VOLmax = 0.45V
1.8V power domain.
If unused, keep it
open.
NET_
STATUS
6
DO
Indicate the module
network activity
status.
VOHmin = 1.35V
VOLmax = 0.45V
1.8V power domain.
If unused, keep it
open.
SLEEP_IND
3
DO
Indicate the sleep
status.
VOHmin = 1.35V
VOLmax = 0.45V
1.8V power domain.
If unused, keep it
open.
USB Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
USB_VBUS
71
PI
USB detection.
Vmax = 5.25V
Vmin = 3.0V
Vnorm = 5.0V
UC20_Hardware_Design Confidential / Released 21 / 84
UMTS/HSPA Module Series
USB_DP
69
IO
USB differential data
bus.
Compliant with USB
2.0 standard
specification.
Require differential
impedance of 90Ω.
USB_DM
70
IO
USB differential data
bus.
Compliant with USB
2.0 standard
specification.
Require differential
impedance of 90Ω.
USIM Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
USIM_GND
10
Specified ground for
USIM card.
USIM_VDD
14
PO
Power supply for
USIM card.
For 1.8V USIM:
Vmax = 1.9V
Vmin = 1.7V
For 3.0V USIM:
Vmax = 3.05V
Vmin = 2.7V
IOmax = 50mA
Either 1.8V or 3V is
supported by the
module automatically.
USIM_DATA
15
IO
Data signal of USIM
card.
For 1.8V USIM:
VILmax = 0.6V
VIHmin = 1.2V
VOLmax = 0.45V
VOHmin = 1.35V
For 3.0V USIM:
VILmax = 1.0V
VIHmin = 1.95V
VOLmax = 0.45V
VOHmin = 2.55V
Pull-up to USIM_VDD
with 15k resistor
internally.
USIM_CLK
16
DO
Clock signal of USIM
card.
For 1.8V USIM:
VOLmax = 0.45V
VOHmin = 1.35V
For 3.0V USIM:
VOLmax = 0.45V
VOHmin = 2.55V
USIM_RST
17
DO
Reset signal of
USIM card.
For 1.8V USIM:
VOLmax = 0.45V
VOHmin = 1.35V
For 3.0V USIM:
VOLmax = 0.45V
UC20_Hardware_Design Confidential / Released 22 / 84
UMTS/HSPA Module Series
VOHmin = 2.55V
USIM_PRE
SENCE
13
DI
USIM card insertion
detection.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain.
If unused, keep it
open.
ADC Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ADC0
45
AI
General purpose
analog to digital
converter.
Voltage range:
0.2V to 2.1V
If unused, keep it
open.
ADC1
44
AI
General purpose
analog to digital
converter.
Voltage range:
0.2V to 4.2V
If unused, keep it
open.
Main UART Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RI
62
DO
Ring indicator.
VOLmax = 0.45V
VOHmin = 1.35V
1.8V power domain.
If unused, keep it
open.
DCD
63
DO
Data carrier
detection.
VOLmax = 0.45V
VOHmin = 1.35V
1.8V power domain.
If unused, keep it
open.
CTS
64
DO
Clear to send.
VOLmax = 0.45V
VOHmin = 1.35V
1.8V power domain.
If unused, keep it
open.
RTS
65
DI
Request to send.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain.
If unused, keep it
open.
DTR
66
DI
Data terminal ready,
sleep mode control.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain.
Pull-up by default.
Low level wakes up
the module. If
unused, keep it open.
TXD
67
DO
Transmit data.
VOLmax = 0.45V
VOHmin = 1.35V
1.8V power domain.
If unused, keep it
open.
RXD
68
DI
Receive data.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
1.8V power domain.
If unused, keep it
open.
UC20_Hardware_Design Confidential / Released 23 / 84
UMTS/HSPA Module Series
VIHmax = 2.0V
Debug UART Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
DBG_TXD
12
DO
Transmit data.
VOLmax = 0.45V
VOHmin = 1.35V
1.8V power domain.
If unused, keep it
open.
DBG_RXD
11
DI
Receive data.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain.
If unused, keep it
open.
RF Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ANT_DIV
35
AI
Diversity antenna.
50Ω impedance
If unused, keep it
open.
ANT_MAIN
49
IO
Main antenna.
50Ω impedance
ANT_GNSS
47
AI
GNSS antenna.
50Ω impedance
If unused, keep it
open.
PCM Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
PCM_IN
24
DI
PCM data input.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain. If unused, keep it open.
PCM_OUT
25
DO
PCM data output.
VOLmax = 0.45V
VOHmin = 1.35V
1.8V power domain. If unused, keep it open.
PCM_SYNC
26
IO
PCM data frame sync signal.
VOLmax = 0.45V
VOHmin = 1.35V
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain. In master mode, it is an output signal. In slave mode, it is an input signal. If unused, keep it open.
PCM_CLK
27
IO
PCM data bit clock.
VOLmax = 0.45V
VOHmin = 1.35V
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain. In master mode, it’s an output signal. In slave mode, it is an input signal. If unused, keep it open.
UC20_Hardware_Design Confidential / Released 24 / 84
UMTS/HSPA Module Series
AGND
22
Reserved for analog
ground.
Ground.
If unused, connect
this pin to ground.
I2C Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
I2C_SCL
41
OD
I2C serial clock.
External pull-up
resistor is required.
1.8V only. If unused,
keep it open.
I2C_SDA
42
OD
I2C serial data.
External pull-up
resistor is required.
1.8V only. If unused,
keep it open.
Other Pins
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
WAKEUP_IN
1
DI
Sleep mode control.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain.
Pull-up by default.
Low level wakes up
the module. If
unused, keep it open.
W_DISABLE#
4
DI
Airplane mode
control.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain.
Pull-up by default.
In low level voltage,
module can enter into
airplane mode. If
unused, keep it open.
AP_READY
2
DI
Application
processor sleep
state detection.
VILmin = -0.3V
VILmax = 0.6V
VIHmin = 1.2V
VIHmax = 2.0V
1.8V power domain.
If unused, keep it
open.
RESERVED Pins
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RESERVED
23,28~33
,37~40,
43,55,73
~84
Reserved
Keep these pins
unconnected.
UC20_Hardware_Design Confidential / Released 25 / 84
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